Brake apparatus



' May 26, 1931. N. A. CHRISTENSEN BRAKE APPARATUS Filed-June 1'7. 1925 2 Sheets-Sheet l INVENTOR,

ATTORNEYJ y 9 N. A. CHRISTENSEN 1,807,151

BRAKE APPARATUS Filed Juhe 17, 1925 2 Sheets-Sheefc 2 INVENTOR.

ATTORNEY-J Patented May 26, 1931 "UNITED STATES PATENT or -Flea NIELS A. CHRISTENSEN, OF MILWAUKEE, WISCONSIN 3mm Arrmrus Application and June 1?. 1925. Serial 1. 37,703.

The invention relates to vehicle brakes, and more particularly to those brakes for use with automotive vehicles and trailers for such vehicles.

The object of the invention is to provide a fiuid-pressure-operated. brake mechanism which may be readily applied to, or used in connection with, front or dirigible steering wheels of road vehicles of the automotive A further object of the invention is to provide a brake-mechanism in which the brake cylinder is formed integral with or connected to a supporting arm in the form of a tapered pin, which is secured to a partassocibeing broken away and parts being shown insection; I

Fig. 2 is a composite section taken on the line 22 of Fig. 1;

Fig. 3 i: a detail sectional view taken on so the line 33 of Fig. 2.

medial portion ofthe shoe 12 has a split boss Referring to the drawingsthe numeral 4 designates the web portion of a disk wheel secured to a hub 5 mounted on the wheel spindle 6 of the oscillatory knuckle 7 having a spindle 8 journalled in a bearing arm 9 of the front axle 10.

A brake drum 11 is removably secured to the hub 5 by bolts 5, and a brake-shoe or band 12 cooperates with said drum. The

13 in which an anchor bearing 14 is clamped by the bolt 14, said bearing having a square slot 15 in which the squared end 16 of the auchor pin '17 is slidably mounted.

The anchor pin 17 carries washers 18 which engage the bearing and prevent the mid-portion of the brake member from moving laterally relative to the drum. The shank of the pin 17 extends through a hole in a lu 19 forming part of the front axle 10 an is clamped thereto b a nut 20, while nut 21,

on the outer end 0 the pin, retains the front washer 18 in position.

A'brake release spring 22 is interposed between said anchor pin and a screw cap 23 on I the boss, and extendsthrough an opening in the bearing.

v The steering knuckle is provided with laterally-extending arms 24 formed integral therewith or secured thereto, and each of these arms has a tapered hole 25 to receive the tapered pin portion 26 of a brake cylinder j arm 27, the outer end 28 of said arm being threaded to take the nut 29 which draws the pin portion into wedging engagement with the arm 24 and holds it in this position.

Each brake cylinder 30 is formed integral with the arm 27 and is recessed at 31 to take the head 32 which is clamped thereto by bolts 33 whose shanks are mounted in bosses 34 of the cylinder, and whose heads engage washers 35 that project over a part of said head.

A suitably packed piston 36 works in each brake cylinder and carries a piston rod 37 having a sleeve-bearing portion 38 slidably mounted in said head 32. The outer end of the piston rod has an enlarged polygonal slotted head 39. Compressed air or other suitable pressure fluid is admitted to the front ends of the cylinders, through passages 40, by pipes 40 connected by a T-fitting 41 with a duct 42 formed in the lug 19, which duct connects with a duct 43 having a flexible tube-fitting 44 connected therewith.

Each end of the brake member ,is provided with a lug 45 having a threaded bore to take a jackscrew 46 which is secured in adjusted position by means of a lock-nut 47 and the head 48 of this screw is flattened to engage the straight slot 49 in the head 39 of the piston rod, this slot being disposed parallel to the disk portion of the drum to keep the ends of the brake member in lateral alinement there-' held in a release position by springs 51. Each spring is connected at one end to a hook lug 52 on the brake member and at its other en to a hook 53whose shank has threaded engagement with the arm 27. Thus, the springs 51' and the spring 22 normall act to release the brake from enga ement w1th the drum.

5 When compress air, or other suitable pressure media, is introduced ,into the brake cylinders from the pipes 40, the pistons 36 with the rods 37 move outwardly and act upon I the ends of the brake through thrusting enm 'gagement with said screws 46 to move the lligake member into engagement with the drum I desire it to be understood that this inven tion is not to be limited to any particular. form or arrangement of parts except as such limitations are specified in the claims or necessitated by the prior art.

WhatI claim as my invention is: 1. In brake mechanism of the character de- 2o scribed the combination with a wheel and its brake rum, of an oscillatory su port for the wheel provided with latera y-extending arms, a brake member, fluid-pressure-oper-. i ated motors associated with the ends of said brake member, each motor including a brake cylinder and an arm integral therewith and attached to one of the arms of said wheel support, and release" means for said brake member.

-2.' In brake mechanism of the character described the combination with a vehicle wheel and its brake drum, of asupportforthe wheel provided with laterallyextending arms, a brake member engageable with said drum,

fluid-pressure-o. rated motors associated with the ends 0 said brake member and act, ing directly thereon, each motor includin a brake c linder and an arm integral therewith and rigidly attached to one of the arms of said I 40 wheel support, and release means for saidbrzflkle member. h f I fix testimon' w ereo a m si 'ature.

NfELS A, bHRIsfiN s EN, 

